Malicious PDF — malware analysis report

Static analysis result for SHA-256 26d82e923dca03d5…

MALICIOUS

PDF

75.2 KB Created: 2021-03-30 01:34:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: bf66c0952425a6cf8b8d4aad08213943 SHA-1: 2e5978c45b59ae38008031c5a010b17a078ca4ed SHA-256: 26d82e923dca03d519f5a68e0dbecfa89dc180bd5e8396a3aeb20ae3916ca6b0
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URI pointing to a malicious domain, likely intended to phish users. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, potentially for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ponafet.ru/strik?utm_term=is+samsung+good+for+gaming PDF link annotation
    • http://wejaduz.mypressonline.com/book_report_activities_for_high_school.pdfIn PDF document text
    • https://cdn.sqhk.co/xivovido/fZRIifO/van_gameren_bouw_gendt.pdfIn PDF document text
    • https://cdn.sqhk.co/tevimuwijile/6jd5Eic/diep._io_mod_apk_invisible.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387924/normal_60395fa612713.pdfIn PDF document text
    • https://cdn.sqhk.co/dibirolinu/iNhfUgc/tiny_dangerous_dungeons_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490125/normal_6056edb412f50.pdfIn PDF document text
    • https://cdn.sqhk.co/xetilibul/iibkjaP/dabowezujuvedegaguxetepak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471513/normal_5fe96a533c8f0.pdfIn PDF document text
    • http://rekugegik.scienceontheweb.net/32463391676.pdfIn PDF document text
    • https://cdn.sqhk.co/muluxodipoto/g7higfM/36920517096.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vanatul/eaton_cad_s.pdfIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/33448102444.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/883e5112-0c4c-42f6-877b-7c29119b0181/what_is_tissot_1853.pdfIn PDF document text
    • https://s3.amazonaws.com/gotitibekovi/volakuzoparetuf.pdfIn PDF document text
    • https://s3.amazonaws.com/kovibu/can_constipation_cause_weight_gain_yahoo_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/script_breakdown_template_google_docs.pdfIn PDF document text
    • https://s3.amazonaws.com/pafexegud/block_diagram_reduction_in_control_system_using_matlab.pdfIn PDF document text
    • https://s3.amazonaws.com/gudukupir/4251510381.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e9a32c1-2fa0-4f3e-a12f-b47e5bb23d72/kingdom_hearts_3_walkthrough.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/46451386412.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/504179d1-72b5-49f2-8302-a412ed34c5dd/20577361098.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E7 5132 bytes
SHA-256: 62781004f60e69f1ad37dea544721c9be7c64638793960dcf399820e31dba6f0
font_01_sfnt_off0000fb47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB47 10904 bytes
SHA-256: 251b3df76fdd27d522bd549a32ae4964019967caae9f8f4b4151a7a0d967613c

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